Good question. When I push the button to turn the TV off, I get a blue screen that fades away after about 20 seconds. The buzzing continues until the blue screen turns black and the lamp turns off. The fan then continues to turn for another 60 to 90 seconds without any noise.
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What is the Model Number that is printed on back of TV?
You say TV is DLP ,but you are posting Model# HD52W59 that is for Projection that has 3 Tubes Red/Green/Blue Tubes.
If TV is DLP then problem will be the Color Wheel
If it is Projection then it has a coil on the deflection board that either needs to be replaced or
resolder ciol and take a Glue gun and glue over the top of coil. Coil LL037 on the right handside of the FBT flyback transfomer.
It sounds like it is the Color Wheel. I do not think you can get the Color Wheel separate from the Optical Engine like you can with Samsung. RCA is very tight with there parts like that. Because you have to get the whole
Engine Assy, cost would be too much in my opinion to invest into it. The part cost approx 800.00 the last time I checked on one.
I Hope this helped,
My tv is about not even 3 years old, the bulb was already replaced once and now the tv will not turn on, we replaced the bulb again, but no change... The blue lights come on and flash but eventually turn off.
When you turn the set off does the buzzing stop instantly? If so its the color wheel. If the buzzing continues for a minute or so after turning off the set its the fan. Let me know if you need more information.